What is IEEE 802.11n, what are the advantages and challenges for 802.11n in Wi-Fi networks

This article explains the IEEE 802.11n standard for wireless (Wi-Fi) networks, what is the bandwidth supported by this standard, what is the distance covered by access points employing 802.11n, the advantages of 802.11n, what are the challenges faced by this standard, what steps must someone ensure before upgrading to 802.11n and if it is... »